Introduction to Mountainside, New Jersey

Mountainside, New Jersey, in Union county, is 5 miles W of Union, New Jersey (center to center) and 10 miles SW of Newark, New Jersey. The town has a population of 6,602.

Mountainside History

In the 17th and early 18th century, this region was part of the Elizabethtown Township. Mountainside separated from Westfield in 1895. Early settlers were primarily English and Dutch. On September 24th, 1895, the "Freeholders" voted to incorporate Mountainside, which was named because of its location near the Watchung Mountains. Joseph W. Cory was the first elected mayor of the town.

Mountainside and Nearby Attractions

  • American Museum of Natural History
  • Edison National Historic Site
  • Edgemont Memorial Park
  • Staten Island Botanical Garden
  • New York Aquarium
  • Turtle Back Zoo

Things To Do In Mountainside

The American Museum of Natural History, the Morris Plains Museum, and the American Folk Art Museum have artifacts of historical importance on display. Parks located nearby are the Cheesequake State Park, Old Troy County Park, and the Edgemont Memorial Park. These parks feature nature trails and offer opportunitites for fishing, swimming, boating, and picnicking. The Turtle Back Zoo, and the New York Aquarium are other popular destinations in the area.

Mountainside Transportation

Air transportation is available from the the Newark International Airport.

Mountainside Higher Education

Union County College, Kean University, Drew University, and Seton Hall University are close by.


Total Population 6,765
Male Share of the Population 51.5%
Female Share of the Population 48.5%
Senior Citizens 21%
Employed Population 16+ 3,142
Age of the Population 46


% of people married 62.9%
Average household size 3

Education and Earnings

Population % with Bachelor Degree or Higher 59.4%
Median Earnings25+ $70,725
Median Earnings Without High School Qualification $62,708
Median Earnings With High School Degree $33,345


Median Family Income $158,603
% Above Poverty Level 95.2%
% Below Poverty Level 4.8%

Commute & Sprawl

Average Commute Time 33 minutes
% Working from Home 5.8%
% Walking and Biking to Work 3.9%
% Using Public Transportation 7.8%


People Living Alone 20.6%
Median Gross Rent $1,739
Median House Value $621,800


Other(often includes Hispanic and African American) 14.6%
US/American 0%
English 4.3%
Irish 17.1%

Source: American Community Survey, U.S. Census Bureau, 2014, www.census.gov/programs-surveys/acs/.

Mountainside Almanac

Category Value
Nearest Medium City 5 miles W of Union, New Jersey (center to center)
Nearest Large City 10 miles SW of Newark, New Jersey
County Union
Standard Zip Codes 07092
Phone Area Codes 908
Time Zone Eastern (-5 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 40.672
Longitude -74.357

Mountainside Climate

Nearest Weather Stations


  • Temp ranges are avg daily min and max for the month
  • Precipitation is rainfall (and rainfall equiv of snowfall)

Distance 3.4 miles
Jan Temp 20 to 39 F
Apr Temp 38 to 62 F
Jul Temp 63 to 86 F
Oct Temp 42 to 65 F
Annual Precip 50.9 inches
Distance 5.4 miles
Jan Temp 18 to 39 F
Apr Temp 38 to 62 F
Jul Temp 62 to 86 F
Oct Temp 40 to 66 F
Annual Precip 51.6 inches
Distance 10.5 miles
Jan Temp 24 to 38 F
Apr Temp 44 to 61 F
Jul Temp 69 to 85 F
Oct Temp 48 to 65 F
Annual Precip 46.2 inches

Nearby Cities and Towns

Location Population Median Family Income
Cranford 23,150 $138,377
Fanwood 7,475 $128,830
Garwood 4,323 $94,861
New Providence 12,314 $163,344

Source: American Community Survey, U.S. Census Bureau, 2014, www.census.gov/programs-surveys/acs/.

Mountainside Public Libraries

Mountainside Public Library
Mountainside, New Jersey
(908) 233-0115
Library Web Site

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More Information for Librarians

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Info for Mountainside Government Officials

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